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12 CONTROL AUXILIARY FUNCTIONS
(2) Step mode
In step operations, the timing for stopping the control can be set. This is called
the "step mode". (The "step mode" is set in the control data "
Cd.27 Step
mode".)
The following shows the two types of "step mode" functions.
(a) Deceleration unit step
The operation stops at positioning data requiring automatic deceleration. (A
normal operation will be carried out until the positioning data requiring
automatic deceleration is found. Once found, that positioning data will be
executed, and the operation will then automatically decelerate and stop.)
(b) Data No. unit step
The operation automatically decelerates and stops for each positioning
data. (Even in continuous path control, an automatic deceleration and stop
will be forcibly carried out.)
(3) Step start information
Control stopped by a step operation can be continued by setting "step continue"
(to continue the control) or restarted by setting "restart" in the "step start
information". (The "step start information" is set in the control data "
Cd.28 Step
start information".)
The following table shows the results of starts using the "step start information"
during step operation.
(Warnings will only be output when the step valid flag is ON.)
Stop status in the step
operation
Axis operation status
(RWrn+7, RWrn+15)
Cd.28
Step start
information
Step start results
1 step of positioning
stopped normally
Step standing by
1: Step continue The next positioning data is executed.
2: Restart
A
"step start information invalid warning"
occurs.
Control stopped by a stop
signal
Step stopped
1: Step continue
A restart is carried out at the positioning
data where the control was stopped.
2: Restart
An error occurred, and
the control stopped
Step error occurring
1: Step continue
A
"step start information invalid warning"
occurs.
2: Restart
The following warnings will occur if the "Axis operation status (RWrn+7,
RWrn+15)" is not appropriate when step start information is set.
Axis operation status (RWrn+7, RWrn+15) Step start results
Standing by
Step start information invalid
warning
Stopped
Error occurring
In interpolation
Start during operation warning
In JOG operation
In manual pulse generator operation
Analyzing
Waiting for special start
In zero point return
In position control
In speed control
In speed control of speed/position changeover control
In position control of speed/position changeover control